Healthy Clinical Trial
Official title:
Effect of Monomeric and Oligomeric Flavanols on Exercise Blood Pressure and Vascular Function in Healthy Volunteers
The purpose of this study is to establish an effect of monomeric and oligomeric flavanols supplementation on exercise blood pressure and vascular function in healthy volunteers.
Status | Recruiting |
Enrollment | 41 |
Est. completion date | December 2024 |
Est. primary completion date | December 2023 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 35 Years to 65 Years |
Eligibility | Inclusion Criteria: 1. Healthy men and women with normal to high-normal resting BP (SBP 120 - 139 mm Hg and DBP 80 - 89 mm Hg). 2. Age 35 - 65 years 3. BMI 20 - 32 kg/m^2 4. Hypertensive response to maximal exercise test defined as SBP = 200 mm Hg (men) and = 180 mm Hg (women). Exclusion Criteria: 1. Active engagement in the weight loss programs, also including slimming diets. 2. Active smoking or abstinence from smoking for less than one year. 3. Use of medications that reduce BP and/or can potentially influence other study outcomes (ACE-inhibitors, angiotensin receptor blockers, diuretics, painkillers, etc). 4. Intake of polyphenol-containing supplements for two month before and during the whole course of the study. 5. History of diabetes, cardiovascular, respiratory, renal, gastrointestinal, hepatic or other diseases and conditions, which potentially can compromise participation in this study. 6. Intense sporting (>10 h/week) and/or participation in the competition at the professional level. 7. Pregnancy or breastfeeding. 8. Participation in a clinical trial within 4 weeks prior to inclusion into this study. 9. Vaccination against Covid-19 within two months before the screening/randomization visit or expected vaccination against Covid-19 during the study |
Country | Name | City | State |
---|---|---|---|
Netherlands | VieCuri Medical Center | Venlo | Limburg |
Lead Sponsor | Collaborator |
---|---|
Maastricht University Medical Center | Campus Venlo, CEP Group Holding B.V., VieCuri Medical Centre |
Netherlands,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in systolic blood pressure from before to peak value during the submaximal exercise test | Excessive increase in systolic blood pressure during exercise is a well-characterized risk-factor of cardiovascular disease and is related to signs of sub clinical endothelial dysfunction. | Day 28±3, Day 84±3 | |
Primary | Change in mean blood pressure from before to peak value during the submaximal exercise test | Increase in mean blood pressure during exercise is related to signs of endothelial dysfunction. | Day 28±3, Day 84±3 | |
Secondary | Carotid-femoral pulse wave velocity | Carotid-femoral pulse wave velocity reflects arterial stiffness and is related to the cardiovascular risk. | Day 28±3, Day 84±3 | |
Secondary | Biomarkers of RAAS activation | Renin, angiotensin II and aldosterone are involved in regulation of blood pressure response also during exercise. | Day 28±3, Day 84±3 | |
Secondary | Biomarkers of inflammation | High-sensitivity C-reactive protein (hs-CRP), interleukin (IL)-6, tumor necrosis factor-alpha (TNFalpha) are well-recognized molecules that characterize inflammation. | Day 28±3, Day 84±3 | |
Secondary | Biomarkers of oxidative stress | Malondialdehyde (MDA), trolox equivalent antioxidant capacity (TEAC) reflect the activity lipid peroxidation and antioxidant defense and therefore are indicative about the condition of redox homeostasis. | Day 28±3, Day 84±3 | |
Secondary | Biomarkers of endothelial function | Endothelin 1 and levels of nitrate/nitrite are commonly used to assess endothelial function and characterize balance between vasodilation and vasoconstriction. | Day 28±3, Day 84±3 | |
Secondary | Biomarkers of vascular remodelling | Metalloproteinase (MMP)-9, MMP-2, tissue inhibitor of metalloproteinase (TIMP)-1, TIMP-4 are involved in modulation of extracellular matrix and their activity have been linked to vascular health. | Day 28±3, Day 84±3 | |
Secondary | Other hemodynamic parameters | Values of systolic and diastolic blood pressure and heart rate at rest and during exercise recovery are indicators of cardiovascular risk and were related also to hemodynamic response during peak exercise. | Day 28±3, Day 84±3 |
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